Guarded knife.



PATENTED JULY 14, 1908.

N. HUGHES. GUARDED KNIFE.

APPLIOATION FILED 00T.4. 1907.

INVENTOR #626071 Highs 6.,

BY I

- ATTORNEYS.

WITNESSES:

WW Z8 UNITED STATES PATENT oFnIo NELSON HUGHES, OF PORTLAND, OREGON,ASSIGNOR TO HUGHESMANUFAOTURING COMPANY, OF PORTLAND, OREGON.

GUARDED KNIFE Specification of Letters Patent.

Patented July 14, 1908.

To all whom it may concern:

Be it known that I, NELsoN HUGHES, residing at Portland, county ofMultnomah and State of Oregon, have invented certain new and usefulImprovements in Guarded Knives, of which the following is aspecification.

My invention relates to certain new and useful improvements in guards orshoes for rounded knives and the like and has for its object to providea device of this character of a very simple and effective construction,which can be easily and cheaply manufactured and which will readily andeffectively serveits intended purposes.

In its generic nature, my invention comprises an elongated disk on oneor both points of a rounded knife, a portion of which disk forms a guardor shoe for retaining the knife as it passes through the leather and toenable the knife to be carried smoothly and evenly on a line, or besidethe pattern with out being allowed to sink into the cutting board ortable, thus lessening the strength required to obtain the same resultsand pre vent the destruction of the cutting board.

With other objects in view than have been heretofore specified, theinvention also comprises certain novel construction, combination andarrangement of parts, all of which Will be first described in detail andthen be specifically pointed out -in the appended claims, referencebeing made to the accompanying drawings, in which Figure 1, is aperspective view of my invention as applied for use in connection with asingle pointed round knife. Fig. 2, is a side elevation of a doublepointed round knife showing my invention applied to both points of theblade. Fig. 3,is an enlarged side elevation of the point of the knifeshown in Fig. 2 with the guard attached. Fig. 4, is a section on theline 44 of Fig. 3. Fig. 5, is a detail view hereinafter referred to.

Referring now to the accompanying drawings in Which like letters andnumbers of reference indicate like parts in all of the figures, 1designates the knife the blade of which may be of the form shown inFigs. 1 or 2, and to the point of which the guard 1 is secured by anyapproved manner, such as passing the point through the aperture in theguard and riveting or upsetting the end of the point, as indicated inFig. 5. The guard 1 may be forged on the blade 1 instead of riveting thesame, as shown in Fig. 3, if so desired.

A designates the cutting member which may be the table upon which theleather C, or other material being out is laid, or a suitable cuttingboard (not shown) may be used.

In the practical application of my invention, the guard 1 is passedunder the leather O, thus holding the blade 1 as it is drawn through theleather by the operator and preventing the knife cutting into thecutting board as Well as enabling the same to be guided more accuratelyalong the line of out than with the ordinary knife.

The guard disk 1 is preferably formed of elongated shape, as shown inFig. 4, and is slightly convexed as at 3*- on either side of the planecontaining the peripheral edge 2" of the disk.

Either one, or both of the points of the knife shown in Fig. 2, may beprovided with the guard 1 as may be found convenient, thus allowing theoperator to do more work with greater ease, less waste and more accuracythan with the knife without the guard.

In my invention the knife 1, where it joins curved down out edges 1 and2 adjacent the guard, as shown in Fig. 3, to enable the cut to be madeeasier and better than with the ordinary shaped knife. The doubly curvededges 1 2 are known in the trade as down cutting edges, for the reasonthat the cutting action while'the knife is being drawn through theleather tends to hold the leather down on the table instead of liftingthe same, as is done by an under cut knife. This will be readilyapparent by reference to Figs. 1 and 3 of the drawings.

While the construction illustrated in the drawings and herein describedshows a preferable form of my invention, it is manifest that suchconstruction may be further modified, without departing from the spiritof my invention or the scope of the appended claims.

.with the disk 1, isprovided with doubly What I claim is 1. A guard forrounded knives comprising a disk having a convexed top and bottom andsecured to the point of a knife blade, substantially as shown anddescribed.

2. The combination with a knife having a point provided with cuttingedges, of a guard disk cooperatively secured to such point,

substantially as shown and described.

3. The combination with a knife having a point provided with cuttingedges, of a guard disk cooperatively secured to such point to lie withlts edge in a plane at right angles to that of the cutting edge of theknife blade, substantially as shown and described.

4. The combination with a rounded knife, having a point, of a guard disksecured to such point to lie in a plane at right angles to thatcontaining the knife blade, said knife blade having double cutting edgesadjacent the guard disk, substantially as shown and described.

5. A two-edge blade having a pair of doubly curved edges 1"2 combinedwith a guard 1 secured to the blade adjacent to said cutting edges.

6. A two-edge blade having doubly curved cutting edges 1 -2 combinedwith a guard l secured to the blade adjacent to said cutting edges andto lie in a plane at right angles to the plane of the blade.

NELSON HUGHES.

Witnesses:

A. T. LEWIS, W. P. LA ROCHE.

